I know it's kinda boring and obvious, but i simply had it recite the entirety of Radiohead's "Fitter Happier" (which was done with a similar program on Mac. Thom Yorke said he loved how it intentionally mispronounced words).

If you quote "Spasticus Autisticus" it does a very solemn version of the song.

_________________"They do, but what do you think is on the radio? Meat sounds. You know how when you slap or flap meat, it makes a noise? They talk by flapping their meat at each other. They can even sing by squirting air through their meat." - Terry Bisson

_________________"They do, but what do you think is on the radio? Meat sounds. You know how when you slap or flap meat, it makes a noise? They talk by flapping their meat at each other. They can even sing by squirting air through their meat." - Terry Bisson